Unveiled yesterday in London, the Riversimple car seats only two and runs on an open source fuel cell. Available by 2013, the car has a 240 mile range on its 1 kg hydrogen tank (equivalent to about 300mpg) and can zoom up to 50mph. The company that made the cell, Horizon Fuel Cell Technologies, says that it would be possible to lease it for about $315.00 a month. Compare that to the higher priced Honda FCX Clarity for $600.00 and the MINI E for $850.00 a month and it would appear that the company may have a hit on their hands.